AEC systems are designed to ensure: proper penetration back up ...

[nevelica]

AEC systems are designed to ensure:
 
 proper penetration
  back up timer isn't reached
  extended exposure time
  proper density

Question 2

A patient is lying on his right lateral surface and is facing the x-ray tube. What is the projection of the part?
 
 AP
  right lateral decubitus
  left lateral decubitus
  PA

[Mochi]

Answer to Question 1

proper density

Rationale: AEC is designed to ensure proper density for a part is achieved. kVp is selected along with the cell according to part coverage is selected. The exposure is terminated when optimal density is reached.

Answer to Question 2

AP

Rationale: A patient lying on his right side with a horizontal beam describes a right lateral decubitus position. Projection describes how the beam passes through the part. If the patient is facing the tube, the projection would pass through the part AP.

[nevelica]

Thanks for the timely response, appreciate it

[bitingbit]

Excellent